Inter -- again! -- beginning to roast East Lancs side (6)

'inter again' is the definition.
('bury' can be a synonym for 'inter' so perhaps 'rebury' is OK for 'inter again')

'beginning to roast east lancs side' is the wordplay.
I cannot really understand how this works, but
'east' could be 'e' (synonyms) and 'e' is found within the answer.
'side' could be 'r' (abbreviation for right) and 'r' is located in the answer.
The remaining letters 'bury' is a valid word which might be clued in a way I don't see.
This may be the basis of clue (or it may be nonsense).

Can you help me to learn more?